.bat file for batch unpacking in Windows. Paste this into Notepad, correct the path to mmcl.exe, and save it as a .bat file in the same folder as your AVI files. Open the folder in Explorer and double-click the .bat file. The unpacked AVIs will be written in a new folder (only the ones that needed to be unpacked).

Released version 1.4.3. Fixes a bug that can cause synch problems with some (rare) files, adds the ability to pack files containing drop frames, and removes the --user-data switch (it's shown in the --info text now).

I figured out that there's only one thing keeping MPEG4 Modifier 1.4.3 from running on Mono, it's the "Shown" event added in WinForms 2.0. I worked around this and made a compile that runs mostly fine in Mono. Screenshot of MPEG4 Modifier 1.4.3 running on Mono 1.2 in Ubuntu:

Opening a file via the file dialog didn't work so well, it seems the file type filtering is broken and it doesn't show any files at all, but you can navigate to the folder and type in the filename manually. Or don't use the file dialog at all, just drag your file onto the "AVI Source" textbox.

@plugh: Done. The byte size written in the list refers to the size of the VOP plus any headers that go with it (there should only be headers before I-VOPs, such as the VOL and user data). For videos with packed bitstream, if you want to know the size of a packed frame, just add up the size of both VOPs contained in that frame.

Sorry for my english. I have a little prb with mp4Modifier and mono. Why when i select .avi file mp4m down? , drag'n'drop also. (Linux Mandriva 2007) , it is a librairie??? please help me if possible. thanks you